Jewelry. Each piece is worth more than most other things you can make, and requires simple to find/make materials. If you just craft every ingot and jewel you get into a piece, not only will your Smithing level up at about the same speed as the rest of your skills, you will make a fortune very quickly.

The iron daggers don't work anymore, the gold transmute takes too long and is expensive. What's the best way to get smithing to lvl 100?

Yeah just make jewlery, even silver jewlery with gems are worth more then plain gold rings. I did it this way, it does take a while but it is much faster then smithing Iron Daggers. Also get people to train you in smithing.

The iron daggers don't work anymore, the gold transmute takes too long and is expensive. What's the best way to get smithing to lvl 100?

Yeah just make jewlery, even silver jewlery with gems are worth more then plain gold rings. I did it this way, it does take a while but it is much faster then smithing Iron Daggers. Also get people to train you in smithing.

Lol training is over for me. There was a glitch where the Whiterun guards came after me. Eurlond Grey-Mane got caught in the cross fire and died. I keep going to the skyforge as his body has disappeared but I havent seen him. Just as I was starting to get into smithing too

i leveled my smithing and enchanting together. i just revisited mines as often as possible made lots of expensive jewelry with jewels found from questing/generalplaying then enchanted them... probably took a good chunk of hours gametime, but it was done while just playing through DLCs as they came out.

If you're really intent on doing it easily I suppose you could remove the patch from your 360 and play offline long enough to get your smithing to 100 using the Iron Dagger method. It's not too hard if I recall, though might want to check around incase it deletes certain items added in through a patch.